Question 1
Which of the following statements is false about Redundant Array of Independent Disks (RAID)?
Comprehensive and Detailed Explanation (HCIA--Cloud Computing aligned):
RAID technology is a key topic in the Storage Technology Basics domain of HCIA--Cloud Computing. Different RAID levels provide varying balances of performance, capacity, and fault tolerance.
RAID 0 (A) uses data striping across multiple disks to improve read/write performance but provides no data redundancy. This statement is correct.
RAID 1 (C) uses disk mirroring, where identical data is written to two disks, ensuring high data reliability. This statement is correct.
RAID 5 (D) uses distributed parity across disks, allowing data recovery if one disk fails. This is also correct.
RAID 6 (B) is the false statement. RAID 6 does not use mirroring. Instead, it uses dual parity, allowing the system to tolerate the failure of two disks simultaneously.
Therefore, option B is incorrect and is the false statement.